• Korean journal of food and cookery science
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• v.33 no.2
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• pp.237-245
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• 2017

Purpose: This research was conducted to provide basic data on Kimchi consumption of high school students by determining their recognition and preferences related to Kimchi. Methods: Our survey was administered to 450 high school students in the Incheon area from September 1 to October 30, 2015. A total of 412 questionnaires were used for the final analysis. Results: Most students (42.6%) consumed Kimchi every meal (more than 3 meals/day), and only 3.6% did not consume Kimchi at all. The most common reason for consuming Kimchi was 'tasty' (46.4%). On the other hand, those who did not consume Kimchi cited 'preference for other side dishes' (50.0%). 'Home-made Kimchi' was the most common source of consumed Kimchi (63.0%). With respect to recognition of Kimchi, most cited terms were 'traditional' ($4.64{\pm}0.58$), followed by 'healthy' ($4.30{\pm}0.77$) and 'prefer home-made' ($3.88{\pm}0.93$) (p<0.001). The average preference for Kimchi was $3.71{\pm}1.07$. The most common reason for preferences was 'crisp texture' (37.6%). The most popular flavor was 'spicy' (33.6%), and the most popular fermentation level was 'appropriate' (55.6%). When preferences for Kimchi were further analyzed, 'baechu Kimchi' (4.18) was the most popular. Further, Kimchi is a popular ingredient for many dishes, and the most popular dish was 'stir-fried pork with Kimchi' (4.50). Conclusion: In the future, positive recognition of Kimchi consumption can be promoted through nutrition education and various advertisements. Furthermore, efforts should be made to establish the principles of traditional Korean food for students.

• Nutrition Research and Practice
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• v.8 no.6
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• pp.638-643
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• 2014

BACKGROUND/OBJECTIVES: Kimchi is a traditional Korean fermented vegetable containing several ingredients. We investigated the protective activity of methanol extract of kimchi under different fermentation stages against oxidative damage. MATERIALS/METHODS: Fresh kimchi (Fresh), optimally ripened kimchi (OptR), and over ripened kimchi (OvR) were fermented until the pH reached pH 5.6, pH 4.3, and pH 3.8, respectively. The radical scavenging activity and protective activity from oxidative stress of kimchi during fermentation were investigated under in vitro and cellular systems using LLC-$PK_1$ cells. RESULTS: Kimchi exhibited strong radical scavenging activities against 1,1-diphenyl-2-picrylhydrazyl, nitric oxide, superoxide anion, and hydroxyl radical. In addition, the free radical generators led to loss of cell viability and elevated lipid peroxidation, while treatment with kimchi resulted in significantly increased cell viability and decreased lipid peroxidation. Furthermore, the protective effect against oxidative stress was related to regulation of cyclooxygenase-2, inducible nitric oxide synthase, nuclear factor-${\kappa}B$ p65, and $I{\kappa}B$ expression. In particular, OvR showed the strongest protective effect from cellular oxidative stress among other kimchi. CONCLUSION: The current study indicated that kimchi, particularly OptR and OvR, played a protective role against free radical-induced oxidative stress. These findings suggest that kimchi is a promising functional food with an antioxidative effect and fermentation of kimchi led to elevation of antioxidative activity.

• Journal of Haehwa Medicine
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• v.12 no.1
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• pp.1-9
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• 2003

This experimental study was carried out to evaluate the effects of Kimchi intake of Acanthopanacis cortex extract (APCE) supplementation on cytokine-induction and immune response in mice. To study in experiments using male Balb/c mice fed Kimchi and Kimchi of APCE supplementation (addition of 2% of total Kimchi weight) containing fed experimental diet during 2 weeks. Experimental mice were fed control diet or diet containing freeze-dried Kimchi at the level of 5%(w/w) or 5% freeze-dried Kimchi with 2% APCE supplementation. The main ingredient of Kimchi was Korean cabbage and fermentation was carried out at $4^{\circ}C$ for three weeks. Freeze-dried 2% APCE supplementation was added to Kimchi at the begining of fermentation. In order to investigate the effect of Kimchi intake of APCE supplementation (5%Kimchi-2%APCE), the following was performed; body weight, food intake, hematological parameter, serum level of mouse interleukin-4 (mlL-4) and mouse interferon-$\gamma$ (mIFN-$\gamma$ ), and, the percentage of CD3+/CD4+, CD3+/CD8+, B220+ in splenic cells. The results of final body weight, and food diet intake of two Kimchi groups were lower than those of the control group (not supplemented experimental diet). The hematology change obtained from the level of WBC (white blood cell) and platelet were not affected by feeding different dietary regiments, but the level of RBC (red blood cells) HB (hemoglobin), and spleen weight of two Kimchi groups were increased significantly than those of the control group. The serum level of IL-4 and IFN-$\gamma$ of two Kimchi groups were increased significantly than those of the control group, also enhanced the percentages of the CD3+/CD4+ and CD3+/CD8+ by 5% freeze-dried Kimchi, and 5%Kimchi-2%APCE group were 43.9 and 65.2%, and 96.0 and 208% than those of the control group, respectively. From these results, it can be concluded that Kimchi itself has an immuno-stimulatory effect and Kimchi contaning 2% APCE supplementation has the more pronounced effect in vivo system.

• Microbiology and Biotechnology Letters
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• v.27 no.3
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• pp.246-251
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• 1999

To extend the storage period and to inhibit contamination of Kimchi by Escherichia coli, conditions of Kimchi brining and effects of the fermentation starter, halophilic Lactobacillus HL-48 were investigated. Optimum brining condition for Kimchi was accomplished in 15% NaCl and at pH2.5-3.0 adjusted by lactic acid. Starter-treated Kimchi showed pH 4.2 after 18hr fermentation, while the pH of starter-untreated Kimchi resulted in 3.3. After 36hr fermentation, the number of E. coli in starter-treated Kimchi was found clearly to decrease and not detected macroscopically, but contamination of E. coli (5.3$\times$103CFU/ml) was observed in starter-untreated sample. Organic acids in Kimchi contained organic acids such as oxalic acid, citric acid, malic acid and lactic acid. among ther, lactic acid content was remarkably high in the early fermentation stages. However, from 24hr fermentation, lactic acid content of starter-untreated Kimchi was higher than that of starter-treated Kimchi.

• Food Science and Industry
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• v.53 no.4
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• pp.422-434
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• 2020

Commercial kimchi was produced 467 thousand tons in Korea at 2018 year. One thousand factories and 15 thousand labors were working for the production of kimchi. Seven hundred thousand tons of raw materials was used for the production of commercial kimchi, and 96.8% of them was supplied at domestic market. Automatic kimchi processing equipments was developed and used for the productivity improvement. In Korea, 1,991 thousand tons of kimchi was consumpted and 717 thousand tons of them was supplied by commercial products, and 291 thousand tons of them was imported from China. Thirty thousand tons was exported to Japan, USA, Hong Kong, Taiwan and Australia.

• The Korean Journal of Food And Nutrition
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• v.22 no.1
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• pp.29-40
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• 2009

This study investigates the preferences Chinese have of Korean Kimchi and improvements for Chinese market adaptation of Kimchi through a survey. The questionnaire was conducted on 298 Chinese(108 males, 190 females) residing in Weihai, Yantai and Qingdao in Shandong province. The questionnaire form was developed and used for self-administration. The collected data were analyzed by SAS package. Among the subjects, 88.9% had experienced eating Kimchi and 58.8% liked Kimchi. The preference of Kimchi was significantly higher among males, workers, persons who had visited Korea, and persons interested in Korea compared to females, university students, persons who hadn't visited Korea, and persons with no interest in Korea. The reasons for liking Kimchi, in order of popularity, were for its 'refreshing taste'(64.9%), 'spicy taste'(57.7%), 'chewy texture'(47.2%), and 'sour taste'(35.1%). The reasons for disliking Kimchi were for its 'smell'(19.6%), 'sour taste'(16.2%), 'salty taste'(14.3%), and 'appearance'(8.7%). Of those surveyed, 97.6% had a positive opinion of Kimchi intake in the future. The intention of future consumption of Kimchi was significantly higher in females than males. The type of Kimchi wanted by Chinese was 'less seasoning'(53.4%), 'less spicy'(46.0%), 'sweeter taste'(39.3%), 'less salty'(37.2%), and 'no fish-like smell'(35.6%). Improvements for increasing Chinese Kimchi consumption were 'development of Kimchi according to Chinese preference'(81.2%), 'improvement of sanitation'(73.5%), 'decrease in the sale price of Kimchi'(72.8%), and 'convenient place for the purchase of Kimchi'(63.8%).

• Journal of the Korean Home Economics Association
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• v.41 no.9
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• pp.85-92
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• 2003

Recently, the consumption of commercial kimchi in Korea has increased over 30% and continues to grow rapidly. Similarly, over 50% of Japanese pickles(Tsukemono) have changed to kimchi and most of them are commerical. The purpose of this research is to cmopare and contrast Korean commerical kimchi to Japanese commerical kimchi. Furthermore, it is to provide valuable information to the consumers and suppliers as well as to improve the quality of commercial kimchi. Five different kinds of materials were used; (A) and (B) kimchi that were made and sold in Korea, (C) and (D) kimchi that were made and sold in Japan, and (E) kimchi made in Korea, but sold in Japan. The kimchi purchased on April 20th, 2002 and sensory evaluation, respectively, and they were preserved at $5^{\circ}C$. For the quality index, the followings contents were measured; moisture, ash, protein, crude lipid, mineral and capsaicin. In addition, pH, acidity and sensory evaluation for kimchi stored at $5^{\circ}C$ were measured for four weeks.

• The Korean Journal of Food And Nutrition
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• v.16 no.2
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• pp.123-129
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• 2003

Kimchi made with the addition of 2 percent of boiled overgrown antler, raw overgrown antler, overgrown antler treated with lactic acid(acid treated overgrown antler) has been fermented for 15 days at 11 $^{\circ}C$. After 15 days of fermentation, the results show that pH of boiled overgrown antler Kimchi was 3.82, that of raw overgrown antler Kimchi was 4.07, acid treated overgrown antler Kimchi was 3.98 control Kimchi was 3.86, and acidity of boiled overgrown antler Kimchi was 7.2 that of raw overgrown antler Kimchi was 10.1, that of acid treated overgrown antler Kimchi was 8.6, control Kimchi was 6.9, respectively. After 15 days, total sugar content was 1.20% in boiled overgrown antler Kimchi, 0.46% in raw overgrown antler Kimchi, 1.15% in acid treated overgrown antler Kimchi, 1.46 % in control Kimchi, and reducing sugar was 0.47% in boiled overgrown antler Kimchi, 0.09% in raw overgrown antler Kimchi, 0.58% in acid treated overgrown antler Kimchi and 0.39% in control Kimchi, respectively. Amino acid content was 16.35${\mu}$mol/m1 in boiled overgrown antler Kimchi, 20.83${\mu}$mol/ml in raw overgrown antler Kimchi, 15.06${\mu}$mol/m1 in acid treated overgrown antler Kimchi, 17.60${\mu}$mol/m1 in control Kimchi, and protein was 1.830% in boiled overgrown antler Kimchi, 2.011% in raw overgrown antler Kimchi, 2.101% in acid treated overgrown antler Kimchi and 2.011% in control Kimchi, respectively. Lactic acid content was 2.036% in raw overgrown antler Kimchi, 1.485% in acid treated overgrown antler Kimchi, 0.954% in boiled overgrown antler Kimchi, 1,200% in control Kimchi, and the content of succinic acid and acetic acid was highest in acid treated overgrown antler Kimchi, and the result was 0.1531% and 0.188%, respectively. The number of microorganism was 0.96${\times}$10$\^$8/g∼3.05${\times}$10$\^$8/g. The number of microorganism was highest in raw overgrown antler Kimchi, and followed by acid treated overgrown antler Kimchi, control Kimchi, and boiled overgrown antler Kimchi, respectively, The results of test of the saltness, sour, aroma, color, texture through sensory evaluation reveal that boiled overgrown antler Kimchi and raw overgrown antler Kimchi has the excellent taste, and followed by control Kimchi, acid treated overgrown antler Kimchi, respectively.

• Preventive Nutrition and Food Science
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• v.3 no.3
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• pp.287-291
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• 1998

Brining property and antimutagenic effects of organically cultivaged Chinese cabbage kimchi (OC kimchi) and common Chinese cabbage imchi (CC kimchi) were studied. The salt absorption rate of leaves was faster than that of stems of the Chinese cabbages. Due to the large portion of leaf in organic Chinese cabbage, organic Chinese cabbage(OC) was much faster in terms of salt absorption rate than common Chinese cabbage(CC). The antimutagenic effects of methanol extracts of CC kimchi and OC kimchi were studied against aflatoxin B1(AFB1) using Ames test on Samonella typhimurium TA 100 and N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) using SOS chromotest. Methanol extract from 6 -day fermented OC kimchi at 15 $^{\circ}C$ showed 80% inhibition rate against the indirect mutage, aflatoxin B1 induced mutagenicit where as that from 6-day fermented CC kimchi at 15 $^{\circ}C$ showed 54% inhibition rate in the Ames test. Methanol extracts from 6-day fermented CC kimchi and OC kimchi showed 27 % and 58 % inhibition rate against direct mutagen , N-methyl-N'-nitro-N-nitrosoguanidine induced mutagenicity, respectively in SOS chormotest, thus OC kimchi exhibited higher antimutagenic activity than kimchi.

• Korean Journal of Human Ecology
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• v.8 no.1
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• pp.219-226
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• 1999

The survey was conducted to investigate the consumption aspects of commercial kimchi and the future pattern of kimchi consumption. The college students(473) were randomly selected from six universities in Taejon. Ninety seven percent of students had taken the commercial kimchi. They chose kimchi manufactured by the famous company(62.4%), merchant in market(16.9%), and agricultural corporation(14.4%). In purchasing the commercial kimchi, qualty(76.0%) was considered as the most important factor and then price(13.1%), brand name(5.1%). The main reason for disliking commercial kimchi was indicated as 'different taste from home-made' by the male and 'additives added in kimchi' by the female(p<0.01). The maintenance of aging condition was believed the most essential factor to increase the consumption of commercial kimchi. Two thirds of the subjects anticipated to take home-made kimchi after marriage. Half of them replied to want to take kimchi made by traditional method, even though to buy the sauce for kimchi-making sold in market. More female students were willing to purcase the sauce for kimchi-making than the male(p<0.01).